Home / 128,960,030.20-193,440,045.30-42,711,748.60

Finding the Fourth Proportional to 128,960,030.20, 193,440,045.30 and 42,711,748.60

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Solution

The fourth proportional to 128,960,030.20, 193,440,045.30 and 42,711,748.60 is: 64,067,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,030.20 : 193,440,045.30 = 42,711,748.60 : x
  2. Step 2: Convert to fraction form
    128,960,030.20/193,440,045.30 = 42,711,748.60/x
  3. Step 3: Cross multiply
    128,960,030.20x = 193,440,045.30 × 42,711,748.60
  4. Step 4: Simplify right side
    128,960,030.20x = 8,262,162,584,026,212
  5. Step 5: Solve for x
    x = 8,262,162,584,026,212/128,960,030.20
  6. Step 6: Final answer
    x = 64,067,622.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.